EP0380338A2
Expired / Lapsed
EP
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Compensator for liquid crystal display
Assignee: Eneos Corp
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Filing: 1990-01-25
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Granted: —
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Expires: 2010-01-25
Abstract
Abstract A compensator (2) for liquid crystal display which is composed of: a light transmitting base (1); an alignment layer formed on said base; and a film formed on said alignment layer by a liquid crystalline polymer which exhibits a twisted nematic orientation in the state of liquid crystal and which assumes the state of glass at a temperature below the liquid crystal transition point thereof.
Inventors
- 👤 Shigeki Iida
- 👤 Yasuyuki Takiguchi
- 👤 Takehiro Toyooka
- 👤 Takamichi Enomoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 22:39
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3804; C09K19/3809; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/13363; G02F1/133633; G02F2413/00; G02F2413/01; G02F2413/08; G02F2413/15
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
61 words
(1) A compensator for liquid crystal display, comprising: a light transmitting base; an alignment layer formed on said base: and a film formed on said alignment layer by a liquid crystalline polymer which exhibits a twisted nematic orientation in the state of liquid crystal and which assumes the state of glass at a temperature below the liquid crystal transition point thereof.
Claim 2
Dependent Claim
28 words
(2) A compensator for liquid crystal display as set forth in Claim 1, wherein said liquid crystalline polymer is an optically active polyester containing an ortho-substituted aromatic unit.
Claim 3
Dependent Claim
51 words
(3) A compensator for liquid crystal display, comprising: a light transmitting base; an alignment layer formed on said base; and a liquid crystalline polymer film formed on said alignment layer, said liquid crystalline polymer film containing as a main component a polyester which contains an ortho-substituted aromatic unit as a constituent.
Claim 4
Dependent Claim
44 words
(4) A compensator for liquid crystal display as set forth in Claim 3, wherein said liquid crystalline polymer film is formed by a liquid crystalline polymer composition comprising a polyester which contains an ortho-substituted aromatic unit as a constituent and an optically active compound.
Claim 5
Dependent Claim
27 words
(5) A compensator for liquid crystal display as set forth in Claim 4, wherein said optically active compound is a high polymer having an optically active group.
Claim 6
Dependent Claim
80 words
(6) A compensator for STN liquid crystal display, using a film obtained by heat-treating an optically active polyester containing an ortho-substituted aromatic unit, or a composition containing a liquid crystalline polyester and an optically active compound which liquid crystalline polyester contains an ortho-substituted aromatic unit as a constituent, on an alignment layer at a temperature above the glass transition point of said polyester, followed by cooling to a temperature below said glass transition point to immobilize a twisted nematic structure.
Claim 7
Dependent Claim
23 words
(7) A compensator as set forth in Claim 6, wherein said optically active compound is a high polymer having an optically active group.
References Cited (Backward Citations)
No citation records indexed.
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